<a href="###" data-src="inbox2.aspx" id="inbox2" class="change" runat="server" onserverclick="change">a 標簽做按鈕以下為后臺代碼 protected void change(object sender,EventArgs e) {HtmlAnchor a = sender as HtmlAnchor;myFrame.Attributes.Add("src", a.Attributes["data-src"]);}